uxcell 6x6.35mm CNC Motor Shaft Coupler 6.35mm to 6mm Flexible Coupling Product Name : Motor Shaft Coupler;Material : Aluminium Inner Diameter : 6mm / 15/64", 6.35mm / 1/4";Total Size : 20 x 25mm / 0.8" x 1"(D*H) Color : Silver Tone Weight : 19g Pacakage Content : 1 x Motor Shaft Coupler